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Finding the Third Proportional to 3,712 and 6,938

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Solution

The third proportional to 3,712 and 6,938 is: 12,967.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,712 : 6,938 = 6,938 : x
  2. Step 2: Convert to fraction form
    3,712/6,938 = 6,938/x
  3. Step 3: Cross multiply
    3,712x = 6,938 × 6,938
  4. Step 4: Simplify right side
    3,712x = 48,135,844
  5. Step 5: Solve for x
    x = 48,135,844/3,712
  6. Step 6: Final answer
    x = 12,967.63

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Why These Related Problems?

These problems maintain the same ratio (1.87) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.